I cant copy all the html in the element because of the dynamic stuff and i cant find the original html… like i said this was a test some time ago and hasnt been implemented. Also, I need to document this better 
some screenshots if that helps…
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Custom Marker Symbols</title>
<style>
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#map {
height: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 4,
center: {lat:
<dynamic content>
, lng:
<dynamic content>
}
});
var pathFutureCoordinates = [
new google.maps.LatLng(
<dynamic content>
),
new google.maps.LatLng(
<dynamic content>
)
];
for (var i = 0; i < pathFutureCoordinates2.length; i++) {
new google.maps.Marker({
map: map,
position: pathFutureCoordinates2[i],
icon: "http://s3.amazonaws.com/appforest_uf/f1467501109227x405355788534507140/letter_f.png"
});
}
var polyFutureOptions = {
path: pathFutureCoordinates,
strokeColor: '#1FB597',
strokeOpacity: 0.8,
strokeWeight: 2.5
};
var polyFutureOptions2 = {
path: pathFutureCoordinates2,
strokeColor: '#FFC107',
strokeOpacity: 0.8,
strokeWeight: 2.5
};
pathFuture = new google.maps.Polyline(polyFutureOptions);
pathFuture2 = new google.maps.Polyline(polyFutureOptions2);
pathFuture.setMap(map);
pathFuture2.setMap(map);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCKP4DAtGCJm9rFwZr7HV_pY5e_jHOOR1s&callback=initMap">
</script>
</body>
</html>
I have some issues with the page so I cant test this, but im sure this worked. 
- will keep you updated.